Writing an equation of circle tangent to the x axis given the center

The video tutorial explains the standard form of a circle equation, focusing on determining the center and radius. It discusses how to find the point where the circle is tangent to the X-axis and explains the concept of tangency. The tutorial calculates the radius using the tangent point and presents the final circle equation, concluding the lesson.

How do you determine the center of a circle given its equation?

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What does it mean for a circle to be tangent to the X axis?

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